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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36699afb226e31412fbad98489bf49c9a8dbcbb0a698758ebccd1ab36eeee4e4' 
  AND token = 'h6y+d+n0R3eAG0j31gKqUZ+hXic2jjgL1vZOM6vLtsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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