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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e783f2a31327cc9bde10fbc8098e734eac0b62fcbade9a0dd0132f60c4b71d3' 
  AND token = 'ID/+K1XedCl/YKwQ/bUC3lgM1boHITAvRP2cT83trhs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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