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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be0e1f4a049319b1d9fa0493f51964ce5f65f448c74a09549f2fa4c236d5ce7f' 
  AND token = 'HlJ99YV2S/z8V7W+VjMuAeF+P0O2RHbDBVSEHv+cv3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}